Directional drilling target steering apparatus and method
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United States of America Patent
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Sep 22, 2020
Grant Date -
Mar 30, 2017
app pub date -
Dec 8, 2016
filing date -
Jan 5, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus and method are used in conjunction with a system for performing horizontal directional drilling, the system including a drill string extending from a drill rig to a boring tool such that the boring tool is steerable based on a roll orientation. The system also includes an arrangement for generating steering commands for guiding the boring tool to a target position. Responsive at least in part to the steering commands, a display is configured to selectively indicate each of a rotate command, a push command and a spin command. A steering indicator is described which indicates a current roll orientation of the boring tool. A 3-D grid can be animated and centered on either a steering or target indicator. Rounding of a steering command ratio can limit the display of target roll orientations to only those that a given boring tool transmitter is capable of sensing and indicating.
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